Permutation-lock



(No Model.) 2,,Sheets -Sheet 1.

J. H. 80 T. D. MORRIS.

PERMUTATION LOOK.

No. 368,543. Patented Aug. 16, 18 87.

N. PUERS. Pnm-umn m lwr, Washin ton. IL 6.

' (N el.) 2 Sheets-Sheet 2.

'J. H. & T. D. MORRIS.

PBRMUTATION LOOK.

No. 368,543. Patented Aug. 16, 1887.

N. PETEFS. Fholo-Lnhographar, wnshlngtbn. D. c.

UNITED STATES PATENT tries.

JOHN H. MORRIS AND THOMAS D. MORRIS, OF SEWARD, NEBRASKA.

PERMUTATlON-LOCK.

SPECIFICATION forming part of Letters Patent No. 368,543, dated AugustlG. 1887.

Application filed May 5, 1887. Serial No. 237,227. (No model.)

To all whom it may concern.-

Be it known that we, JOHN H. MORRIS and THOMAS D. Monnis, citizens of the United States, residing at Seward, in the county of Seward and State of Nebraska, have invented certain new and useful Improvements in Permutation-Locks, of which the following is a full, clear, and eXact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure lrepresents a rear view of a door having our improved lock applied thereto, and showing one of the notched disks or tumblers removed. Fig. 2 is a front view of the same. Fig. 3 is a sectional view on the line XXof Fig. 2. Fig. 4 is a detail of the sliding latching-plate.

Our invention relates to certain new and useful improvements in permutation-locks; audit consists in the peculiar construction and combination of devices, which we shall hereinafter fully describe and claim.

To enable others skilled in the art to which our invention appertains to make and use the same, we will now describe its construction and indicate the manner in which the same is carried out.

In the said drawings, A indicates the door having our improved lock applied thereto, the said door being of any suitable design and ornamentation, and having countersunk 'portions or recesses a, adapted to receive the notched dialsB and O, the-said dials being provided with spindles E, which pass through openings in the door and the faceplate D of the lock. These dials are of the usual form, and jointly possess sufficient characters to form a large number of combinations, it being understood that the characters are used in conjunction with a notch or other fixed point on thedoor. The spindlesEpass through loose washers F, and have secured to their inner end the usual slotted disks or tumblers, G, which are securely held to the spindle by a pin passing transversely through the same. The sliding plateH in the present case has three projections, c, d, and c, the two former being at the extreme sides of the plate and adapted to engage the slots in the disks or tumblers G when brought into alignment therewith. The projection c is at the center of the sliding plate and midway between the projections c and d, and it is designed to engage a catch on the frame when the door is closed. The sliding'plate, in addition to the features above enumerated, has a rearwardlyextending arm, f, which is slotted upon a pin, 9, projecting from the plate D, whereby the sliding plate may have a free movement on said pin, while a spring, S, engaged at its center by a pin, h, on said plate, has its free curved ends resting against the loose washers F, and returns the sliding plate to its normal position immediately after its projection e disengages the catch on the door-frame, the sliding movement of the plate being facilitated by a headed bolt or knob, 70, passing from said plate through a slot, Z, in the door.

By reason of the above construction we are enabled to provide a strong and simple lock which can only be opened by persons familiar with the existing combination, and one in which a spring-actuated latching-plate is always in condition to engage its adjacent catch, and can be readily opened by pushing back the headed bolt or knob on the outside of the door.

Having thus described our invention, what We claim as new, and desire to secure by Letters Patent, is-

An improved permutationlock consisting of the combination of a face-plate, D, having countersunk portions, the dials seated in said countersinks and having spindles projecting through said faceplate, loose washers F, surrounding said spindles, and the slotted tumblers fixed to the latter, a sliding plate, H, having a slotted rear end guided upon a pin projectingfrom the back of the face-plate, projections c and (Z on its front end adapted to engage the slotted disks, projection 6, also at the front end, and in the center of said plate a headed bolt passing from said plate through a slot in the door, vand a curved spring, S, engaged at its center by a pin on the sliding plate, and having its free ends bearing against the loose washers, all constructed and arranged to operate as herein described.

JOHN H. MORRIS. THOMAS D. MORRIS.

W'itnesses: M. D. OHRIsrY,

SELDEN MARVIN. 

